[twitter] error: PHP 5.3.0 or later requires

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Warning: Cannot modify header information - headers already sent by (output started at /home1/haphaz/public_html/wp-content/plugins/twitter/widget_twitter_vjck.php:77) in /home1/haphaz/public_html/wp-content/plugins/wp-maintenance-mode/wp-maintenance-mode.php on line 841

Warning: Cannot modify header information - headers already sent by (output started at /home1/haphaz/public_html/wp-content/plugins/twitter/widget_twitter_vjck.php:77) in /home1/haphaz/public_html/wp-content/plugins/wp-maintenance-mode/wp-maintenance-mode.php on line 842
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